Snow plow attachment



Dec. 31, 1963 c. A. BALDWIN 3,115,715

SNOW PLOW ATTACHMENT Filed June 7, 1962 IN VENTOR.

CHARLES A. BALDl/V/N United States Patent 3,115,715 SNOW PLOW ATTACHMENT Charles A. Baldwin, 204 E. Kent St., treator, Ill. Filed June 7, 1962, Ser. No. 200,735

3 Claims. (Cl. 3745) This invention relates to a distributor which may be attached to the upper edge of the present snow plow blades and may also be supplied in conjunction with them in an original machine.

A snow plow blade usually is inclined rearwardly from the front left end thereof to discharge snow on the right side of the road and sometimes increases in width rearwardly to assist in directing the snow from the side of the road. In the present invention, means is applied at the top of an ordinary snow plow to assist in directing snow rearwardly and in moving and directing the discharge snow at the trailing end of the snow plow.

An important object of the invention is to provide means for guiding and directing snow accumulated at the top of a blade rearwardly from the front and laterally from the side thereof.

A further object of the invention is to provide conveying means for collecting snow and other material at the top of a blade and positively propelling it lengthwise of the blade as the plow is moved.

A still further object of the invention is to provide improved power means in connection with the attachment for propelling material at the top of the blade utilizing hydraulic power from the engine of the plow itself.

Still a further object of the invention is to provide movable means for directing snow and other material laterally from the end of the plow blade.

Other and further objects of the invention will be more completely described in the application which will be apparent from the accompanying drawings, in which,

FIG. 1 is a perspective view of a motor plow with a blade having an attachment in accordance with this invention, at the top of the blade and to deliver the snow and other material at the trailing end of the blade.

FIG. 2 is an elevational view of an attachment in accordance with this invention as applied to the top of a snow plowing blade.

FIG. 3 is a sectional view of the construction shown in FIG. 2 as taken on the line 33' of FIG. 2; and

FIG. 4 is a sectional view as taken on the line 44 of FIG. 2.

In removing snow from a roadway by means of a snow plow, it is not always suflicient to rely upon the snow plow blade itself. If the snow or other material is sufliciently thick or deep, it will pile up along the blade, may be thrown over and upon the plow itself, and does not evenly remove the plowed material from the roadway, or some other path of the plow.

The present invention provides means for positively receiving, confining and conveying any surplus snow which may accumulate at the top of the blade and also for variable discharging the snow at the trailing end of the blade, and laterally from the path of the plow.

Referring now more particularly to the drawings, a power plow is represented in FIG. 1 as having a plow blade 12 preferably inclined rearwardly from its left or front end to the side of the plow and to. the side of the roadway, the blade sometimes increasing in its width or height as it inclines rearwardly to accommodate a surplus of snow plowed up thereby.

The accumulation of snow or other material may be so great as to fly or move upwardly over the top of the blade 12 and upon the plow 10, and the present attachment comprising a circular hood 14 and the rear of the hood is applied to the top of the blade with the front edge 16 extending forwardly and forming a channel open at the bottom extending for the full length of the plow blade 12. This hood may be attached at its rear edge to the top of the plow blade 12 in any suitable manner but preferably the plow has a rearwardly extending flange 18, the hood having a corresponding rear flange 20 with fastening devices such as bolts 22 inserted between the flanges for releasably securing the hood at the top of the blade. This construction offers a simple means for attaching a hood to a blade when necessary, and for easily disengaging the hood from its attachment to the blade when desired.

A main portion of the hood 14 is substantially circular in cross section for mounting a conveyor therein. This conveyor comprises a central shaft 24 with end bearings 26 for mounting the shaft by means of arms 28 extending to the outer sides of the hood .and offering no substantial obstacle to the passage of snow in the hood. Upon this shaft are mounted a number of paddles or sections 30 usually curved to cause a spiral movement of the snow and other material when the shaft 24 on which they are secured is rotated and these sections being spaced apart, and may be separately removed (not shown), repaired and replaced, if necessary, in causing effective movement of the snow and other material. At one end of the shaft 24 is a motor 32 which may be an electric motor but preferably is a hydraulic motor having an inlet pipe 34 and an outlet pipe 36 connected with a pump (not shown) for controlling a fluid drive to the motor.

Any motor or even a driving connection from the power plow 10 may be suflicient, but it is believed that a hydraulic motor provides more power in relation to the size of the motor, and this may be important in avoiding obstruction to the hood 14 and its conveyor.

At the discharge end of the hood is a collar 38 which may be open at the bot-tom or closed but preferably has an open ring 40 at the outer end with a bottom pivot 42 upon which overlapping sections 44, 46 and 48 are mounted with a stationary section 50 secured to the ring 40 and the overlapping sections successively movable over it. To the outer section 44, an operator in the shape of a rod 52 is connected preferably having a handle 54 convenient to the operator of the snow plow for drawing inwardly and pushing outwardly upon the overlying sections 44, 46 and 48 to vary the outlet of the first one so that snow from the hood may be discharged close to or further from the hood, depending upon the position of this deflector.

With this construction, snow from the attachment may be discharged closely adjacent the pathway of the plow or remotely therefrom depending upon the positions of the overlapping discharge sections. This will be a decided advantage in the removal of snow and other material, by insuring that it be collected at the top of the blade which throws up the material conveyed out of the path of the plow and deposited close to or remotely from the trailing edge of the plow.

While a preferred form of the invention is shown in some detail, it should be regarded as an illustration or example rather than as a limitation or restriction of the invention, since various changes in the construction, combination and arrangement of the parts may be made without departing from the spirit and scope of the invention.

I claim:

1. The combination with a vehicle having hydraulic power and an upright snow-plow blade inclined from forward to discharge ends, of a hood attached along the rear edge to the top of the blade, an hydraulic motor attached in one end of the hood, the hood being open at the bottom for its full length, a shaft mounted and rota-table in the hood, a plurality of metal sections attached to the shaft and forming a conveyor for impelling snow in the hood, means at the discharge end of the hood for directing snow therefrom, and said hydraulic motor connected to the shaft for propelling it from the snow plow hood and operative to throw the snow from the snow plow blade beyond the end thereof by said means.

2. A snow plow having a blade comprising a curved plate with a hood extending along the upper edge and partially forward thereof and open at the bottom, a con- 'veyor having a shaft mounted in the hood to move snow to one end of the blade, means at said end to direct snow from the hood and vary the delivery, and a motor mounted in the hood connected to the conveyor to continuously feed snow in the hood to said means as the plow is operated in the snow.

3. In a snow plow according to claim 2, hydraulic means comprising a portion of the plow, the said motor being hydraulic and mounted in the hood at one end of the conveyor shaft to rotate it, and connecting means from the hydraulic motor to said hydraulic means to operate the conveyor in discharging snow from the end of the hood.

References Cited in the file of this patent UNITED STATES PATENTS 244,019 Leas July 5, 1881 383,556 Brainard May 29, 1888 1,064,282 Blake June 10, 1913 2,085,996 Phillips July 6, 1937 2,109,393 Le Bleu Feb. 22, 1938 2,436,956 Du Pras Mar. 2, 948 2,971,279 Blanchet Feb. 14-, 1961 

1. THE COMBINATION WITH A VEHICLE HAVING HYDRAULIC POWER AND AN UPRIGHT SNOW-PLOW BLADE INCLINED FROM FORWARD TO DISCHARGE ENDS, OF A HOOD ATTACHED ALONG THE REAR EDGE TO THE TOP OF THE BLADE, AN HYDRAULIC MOTOR ATTACHED IN ONE END OF THE HOOD, THE HOOD BEING OPEN AT THE BOTTOM FOR ITS FULL LENGTH, A SHAFT MOUNTED AND ROTATABLE IN THE HOOD, A PLURALITY OF METAL SECTIONS ATTACHED TO THE SHAFT AND FORMING A CONVEYOR FOR IMPELLING SNOW IN THE HOOD, MEANS AT THE DISCHARGE END OF THE HOOD FOR DIRECTING SNOW THEREFROM, AND SAID HYDRAULIC MOTOR CONNECTED TO THE SHAFT FOR PROPELLING IT FROM THE SNOW PLOW HOOD AND OPERATIVE TO THROW THE SNOW FROM THE SNOW PLOW BLADE BEYOND THE END THEREOF BY SAID MEANS. 